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標(biāo)題: 基于51單片機(jī)和Proteus仿真的自動(dòng)換擋電壓表 [打印本頁(yè)]

作者: futao 時(shí)間: 2019-5-9 17:29
標(biāo)題: 基于51單片機(jī)和Proteus仿真的自動(dòng)換擋電壓表
#include <AT89X52.H>

#define LEDDATA P0
#define v20_on {s3=0;s2=0;s1=1;} //宏定義不同量程，不同的開關(guān)狀態(tài)
#define v2_on {s3=0;s2=1;s1=0;}
#define v02_on {s3=1;s2=0;s1=0;}
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};
unsigned char dispbuf[8]={0,0,0,0,0,0,0,0};
unsigned char getdata;
unsigned long temp;
unsigned char i,k,l,m;
unsigned char code  mytable0[]=" Welcome to use  ";
unsigned char code  mytable1[]="Auto Voltmeter!";
unsigned char code line0[]="  Voltmeter "; //初始化顯示
unsigned char code line1[]=" Value:    V ";
//引腳定義
sbit lcdrs=P2^0;
sbit lcden=P2^1;
sbit s3=P3^7;
sbit s2=P3^6;
sbit s1=P3^5;
sbit OE=P3^0;
sbit EOC=P3^1;
sbit ST=P3^2;

void delay(unsigned int z)    //延時(shí)子函數(shù)  z*1ms
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(unsigned char c) //寫命令子函數(shù)
{
lcdrs=0;             //低電平選擇為寫指令
lcden=0;
LEDDATA=c;                //把指令寫入P0口
delay(5);             //參考時(shí)序圖
lcden=1;             //開使能
delay(5);             //讀取指令
lcden=0;             //關(guān)閉使能
}

void write_data(unsigned char d)  //寫數(shù)據(jù)子函數(shù)
{
lcdrs=1;          //高電平選擇為寫數(shù)據(jù)
LEDDATA=d;             //把數(shù)據(jù)寫入P0口
delay(5);          //參考時(shí)序圖
lcden=1;          //開使能
delay(5);          //讀取數(shù)據(jù)
lcden=0;          //關(guān)閉使能
}
void initialize()    //LCD初始化函數(shù)
{
unsigned char num;
lcden=0;
write_com(0x38); //設(shè)置16x2顯示，5x7點(diǎn)陣顯示，8位數(shù)據(jù)接口
write_com(0x0c); //00001DCB，D(開關(guān)顯示)，C(是否顯示光標(biāo))，B(光標(biāo)閃爍，光標(biāo)不顯示)
write_com(0x06); //000001N0，N(地址指針+-1)
write_com(0x01);    //清屏指令  每次顯示下一屏內(nèi)容時(shí)，必須清屏
write_com(0x80+0x10);          //第一行，頂格顯示
for(num=0;num<17;num++)
{
write_data(mytable0[num]);
delay(10);
}
write_com(0x80+0x50);          //第二行，從第一格開始顯示
for(num=0;num<15;num++)
{
write_data(mytable1[num]);
delay(10);
}
for(num=0;num<16;num++)
{
write_com(0x1c); //0001(S/C)(R/L)**;  S/C：高電平移動(dòng)字符，低電平移動(dòng)光標(biāo)；  R/L：高電平左移，低電平右移
delay(300);
}
   delay(1000);

write_com(0x01);    //清屏指令  每次顯示下一屏內(nèi)容時(shí)，必須清屏
write_com(0x80);
for(num=0;num<14;num++)
{
write_data(line0[num]);
delay(10);
}

write_com(0x80+0x40);
for(num=0;num<15;num++)
{
write_data(line1[num]);
delay(10);
}
}
void value(unsigned char add,unsigned char dat)
{
   write_com(0x80+0x47+add);
   if(l==3&&add==2||l!=3&&add==1)
   {
      write_data(0x2e);
   }
   else
   {
      write_data(0x30+dat);
   }
}
main()
{
initialize();
while(1)
_20v:
   {
   v20_on;
   ST=0;
   ST=1;
   ST=0;
      while(EOC==0);
      OE=1;
   getdata=P1;
      OE=0;
   if(getdata<21)
         {
         goto _2v;
         }
   l=3;
   temp=getdata;
      temp=(temp*1000/51)/2;
   goto disp;

_2v:
      v2_on;
      ST=0;
      ST=1;
      ST=0;
      while(EOC==0);
         OE=1;
         getdata=P1;
         OE=0;
         if(getdata<21)
         {
         goto _02v;
         }
         else if(getdata>204)
         {
         goto _20v;
         }
         l=2;
         temp=getdata;
         temp=(temp*1000/51)/2;
         goto disp;

_02v:
      v02_on;
      ST=0;
      ST=1;
      ST=0;
      while(EOC==0);
         OE=1;
         getdata=P1;
         OE=0;
      if(getdata>204)
         {
         goto _2v;
         }
         l=1;
         temp=getdata;
         temp=(temp*1000/51)/2;
   m=temp%10;
   if(m>5){temp=temp/10+1;}
   else{temp=temp/10;}
   goto disp;

disp:    for(i=0;i<=3;i++)
         {
            dispbuf[i]=temp%10;
            temp=temp/10;
         }
   if(l==3)
      {
   for(i=4;i>=3;i--)
   dispbuf[i]=dispbuf[i-1];
      }
   else
   {
   dispbuf[4]=dispbuf[3];
   }
      for(k=0;k<5;k++)
         {
      value(k,dispbuf[4-k]);
         }
   if(l==2){goto _2v;}
   else if(l==1){goto _02v;}
   }
}

電壓表.png (129.26 KB, 下載次數(shù): 99)

基于51單片機(jī)和Proteus仿真的自動(dòng)換擋電壓表.zip

69.9 KB, 下載次數(shù): 23, 下載積分: 黑幣 -5

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